Carinus

Carinus (250-1 July 285) was Roman emperor from 282 to 285 (solo reign from 282 to 285), succeeding Carus and preceding Diocletian. Carinus reigned as co-emperor with his brother Carinus until his death in 284, and he had a one-year solo reign before his assassination.

Biography
Carinus was born in 250 AD, the older son of Roman politician Carus and the brother of Numerian. Carinus was crowned caesar with his brother in 282, and he ruled the western empire while his brother ruled the east. Upon the death of Numerian at Emesa (Homs, Syria), Carinus became the sole emperor. Diocletian, the leader of Numerian's bodyguards, claimed that he was assassinated, and his soldiers proclaimed him the new emperor. Carinus put down usurper Sabinus Julianus in Pannonia while marching east to face Diocletian, and Carinus met Diocletian at the Battle of the Margus in Moesia in July 285. Diocletian won a complete victory over Carinus, whose army deserted him. He was then assassinated by a jealous tribune, whose wife had been seduced by Carinus.